Countries that Start with a Letter: S Part 1: 1. Saint Kitts and Nevis 2. Saint Lucia 3. Saint Vincent and the Grenadines 4. Samoa 5. San Marino 6. São Tomé and Principe 7. Saudi Arabia 8. Senegal 9. Serbia 10. Seychelles 11. Sierra Leone 12. Singapore 13. Slovakia 14. Slovenia 15. Solomon Islands 16. Somalia 17. South Africa 18. South Korea Part 2: 19. South Sudan 20. Spain 21. Sri Lanka 22. Sudan 23. Suriname 24. Swaziland 25. Sweden 26. Switzerland 27. Syria